Dokachin

A time-warp experiment goes catastrophically wrong, tearing a caveman family out of prehistory and dropping them into the modern age. Cars, machines, buildings, and everyday technology are completely alien to the newcomers, who naturally respond with the tools and instincts they understand best.

Their stone axes and tremendous strength make adapting to civilization anything but peaceful. Every unfamiliar object becomes the start of another chaotic encounter as the family tries to make sense of a world separated from their own by thousands of years.